Holy Carp I am behind! Things are accelerating as I push towards my September completion date. If you want daily updates please look me up on facebook or instagram....brennanmetcalf.
http://s125.photobucket.com/user/Metcalfphoto/media/Blender/20180730_170437_zpsceh0ea4b.jpg.html][/URL]
This...

I think the bags aren't a bad idea, I just wouldn't make them drop out of the mount or anything fancy.
Dropping them down for the highway might work against you. Less uptravel is never really fun. It will also change your suspension and steering a bit.
I'd decide on a ride height and stick...

Mini update.
I got the passenger side filled and sanded.
I did a few other things like test fitting some power steering plumbing parts and stuff, but forget to get pictures. Sorry. I will show most of that stuff coming up soon when I install the grill shell and plumb up the coolers.

You can do what ya want, but zero preload, or a negative spring rate at max doop, never seems to work out well to me. It might give you a little more sloppy uncontrolled travel, but it will cost you axle control in a lot of other areas. My advice is to keep it simple. Simple Simple.
Air bags...

Yup, I would go that low. I'd rather have a bit too low AS/AD than too high generally. The numbers also tend to change, get higher, when you are climbing and the CoG is transfering to the rear and up. I think starting a little soft is better than too much. With too much AS, the rear end will...

......one more.....Time for more body work!
I found this surprise under about 3/8 of an inch of bad body filler on the drivers side cowl. Super fun.
After much love from some body hammers, some hot and cold shrinking, a tig welded hole patch, and some patience it mostly disappeared. I...

Ok.....holy cow I am behind....kinda busy trying to get this thing together.
Let me try to catch ya up.
I started on some body work with the grill. It took a few applications of filler, but I got things pretty straight. I tried to use some ear plugs for holes protectors...meh. Small rolls...

I'd lower that to 50-100 or even 50-80
Generally those numbers are based off of sprung CoG also so you have to guess at that to a degree....
The front end will tolerate a bit more AD typically. It may help keep the front end from feeling like it is squating under hard braking, which could be...

Keep it simple.
Find a common OEM bushing to use throughout the control arms. Jeep TJ lower bushings would be just fine in my opinion. Build the arms so that you can press them in and out yourself with a simple tool in the parking lot. Carry a spare or two.
I would build a jig to make all...

The factory rear FJ80 lower arms are approx 27.5" long. Personally. the hang down bracket for the rear lower arms is one of the things I don't like about the 80 chassis. It will be a bit of a rock magnet. Even with a 40" tire is looks like it will be in the way. I would much rather have a smooth...

More things....
Re-plumbed the vent tube for the 6L80E transmission up to behind the intake on engine. That is pretty high on this chassis....
Worked on making some hole patch seams disappear....
I custom made a pass through grommet for the fit in the old master cylinder mounting...

Good to see you back at it.
I agree the radius arms aren't really worth pursuing generally.
It will be interesting to see what you come up with. I would try not to over think it too much though. Lower arms as close to parallel to the ground as possible. Use about 8" of separation at the axle...

Been slacking and a small set back along the way...
I ended up welding in the O2 bungs with the plugs installed for some reason. I messed up something in the welding and the plugs bonded to the bungs. I stripped them out trying to remove them. I ended up having to cut and grind them out. Non...

I pulled the belly pan ( which is only 32 lbs ) (and only takes a single tool to remove) so I could install the downpipes to test the o2 sensors with the #LX45 tub on (and the harness) After that I pulled them back off to drill out for the bungs. I'll weld them up tomorrow. Good times.